10-07-2014, 08:54 AM | #1 |
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DCT Malfunction on track
So during 2nd session of the 2nd day in HPDE3 with NASA @ VIR, my car suffered a DCT malfunction. Car went into limp mode (luckily i did not get rear-ended, cause i was dicing with a few cars) and was shuddering quite a bit, but i think it was the limp mode rev limiter. The screen displayed "DCT Malfunction".
Came back to pits, waited 30 minutes, turned it back on, no signs of any errors. No CEL, no codes, nothing. Seems to run ok. Must have overheated. That much for the "most track ready M3 yet".
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2009 E92 M3 Melbourne Red 6MT
[SOLD] 2015 YMB BMW M3 M-DCT [SOLD] 2010 Alpine White E90 M3 M-DCT [SOLD] 2002 TiAg E46 M3 manual Last edited by jbraslins; 10-07-2014 at 09:09 AM.. |
10-07-2014, 09:26 AM | #2 |
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That stinks! Too late to trade in for a 6MT?
Have you changed the "lifetime" trans fluid yet?
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10-07-2014, 09:33 AM | #3 |
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That sucks... I have not ever had an issue with a DCT car at the track and this might be one of the first ones reported. I would have BMW look at it in case it is specific to your car.
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10-07-2014, 09:40 AM | #4 |
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Yeah, I am taking it in for a checkup.
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10-07-2014, 12:41 PM | #5 |
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That sucks
Hopefully it is only an electronic gremlin. The DCT on my E92 has been almost flawless for 100+ track days over 6 seasons. It sometimes became sluggish when I shifted continuously at 8600rpm. One lap of shifting below 8000rpm brought it back. High engine RPM seemed to put a lot heat in the tranny. I never had a warning or malfunction though. With the lower RPM of the S55, I did not expect any issues. Time will tell. Please keep us posted. Last edited by CanAutM3; 10-07-2014 at 12:46 PM.. |
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10-07-2014, 02:35 PM | #6 |
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10-08-2014, 04:25 AM | #7 | |
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I am willing to bet that the BMW computer system will be able to pull a code from the car. Hope you get it sorted. |
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10-08-2014, 04:57 AM | #8 | |
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Yesterday, Dan @ BPC scanned it with newest ISTA (bmw diagnostic software/hardware) and there were no DCT related codes/events. But, we did find a high pressure fuel pump one in DME. Low rail pressure. Ill start a separate thread about it, long story short bmw dealer is replacing my hp fuel pump under warranty. I was also told there are 2 hp fuel pumps in the country, luckily i snagged one of them.
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10-08-2014, 05:25 AM | #9 |
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10-08-2014, 08:36 AM | #10 | |
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Never had an issue with the DCT on my E90 and works like a champ. I'd toy with it again in event it runs ok to work out any teething problems I guess. How was the car doing otherwise? Were you able to get baseline lap times? I was in the silver E90 M3 (and switching between a black C2S) in HPDE4 Cheers, Lutfy |
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10-08-2014, 09:05 AM | #11 | |
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Don't recall seeing Silver E90 out there Saturday, that is prolly cause you were in HPDE4 and I was in HPDE3. On Sunday, when 3 and 4 got combined, you were running C2S? Don't think I saw that either. Must have been on similar pace and never ran into each other.
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10-08-2014, 10:06 AM | #12 |
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10-08-2014, 11:47 AM | #13 |
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Nice, that's cool to know! Do you happen to have a link to this data?
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10-08-2014, 12:19 PM | #14 |
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http://timingscoring.drivenasa.com/N...INAL%20ALL.pdf
Donnie Isley -- Stock M4 in the article (photo at bottom of this page: http://grassrootsmotorsports.com/events/UTCC14/) |
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10-08-2014, 02:09 PM | #15 | |
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2:12 is a decent time for this car! Grip was intermittent after someone threw oil all over the esses Performance Center BMW M4 was at Road ATL last month. He would clearly pull away at the straight by 8 car's length on me. CRAZY torque... I am going to get one eventually. Keep us posted with what goes on with your car, I intend to get mine next year. Lutfy |
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10-09-2014, 08:11 AM | #16 | ||
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https://m.facebook.com/story.php?sto...5&id=565403624 Quote:
Grassroots motorsports track challenge had 2015 M4 from BMW Perf Center (as you can see above in this thread). They turned 2:09s. Glad to know I am only 3 seconds off some "hired guns".
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10-13-2014, 01:38 PM | #17 | |
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OP, are you planning to change out the gear oil? |
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10-13-2014, 04:05 PM | #18 |
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Probably not, especially if boost leak issue turns out to be the answer to my power problems, and possibly caused DCT overheat. If it ever happens again, especially on the street, then it's a diff story.
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10-13-2014, 04:39 PM | #19 |
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It happened once on my E90 M3 on the street after 30 min or so hard driving ( high rpms ) where the DCT started misbehaving and the area in front of the shifter on the driver side got very,very hot to the touch. No errors though and when I slowed down it cooled off and I never had this issue again. I thought it might have been a temporary lubrication issue.
Last edited by solstice; 10-13-2014 at 04:45 PM.. |
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10-19-2014, 12:59 AM | #20 | |
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Interesting to see how this pans out as more F8x are being tracked.
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10-19-2014, 10:29 AM | #21 | |
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On my first and only 3 day event thus far with the F82, the DCT performed flawlessly. |
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10-19-2014, 11:01 AM | #22 | |
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